This glossary decodes the jargon behind garage door repairs so Stratham homeowners can spot issues early, ask the right questions, and choose the best services without surprises. Whether your 1920s masonry home has a stubborn door or you’re upgrading insulation, knowing these terms saves time and money.
Garage doors in Stratham’s older homes often hide wear behind brick facades and vintage hardware. If yours sticks, sags, or squeals, the fix starts with the right words. We’ve compiled a plain-English glossary of the most common garage door repair terms you’ll hear from our team or in quotes from other companies. Need a pro to walk you through it? Contact us for a free estimate tailored to your Stratham home’s unique quirks.
- Torsion spring
- A tightly wound metal spring mounted above the garage door that counterbalances the door’s weight, letting it open and close smoothly. Unlike extension springs, torsion springs twist to store energy. They’re the safest and longest-lasting option for heavier wooden or insulated doors common in Stratham’s older homes, but they wear out over 5–10 years and require professional replacement. See our full list of services.
- Extension spring
- A spring that stretches along the garage door’s horizontal tracks, pulling the door open when released. Found on lighter doors or older setups, these springs are cheaper but riskier—they can snap without warning. If your Stratham home has a single-wide door with visible springs overhead, it likely uses extension springs. Learn more at request a free estimate / contact us.
- Track
- The metal rails (usually 14–16 gauge) that guide the garage door up and down. Tracks must stay plumb and aligned; even a ¼-inch bend can cause the door to bind or derail. In older Stratham homes, tracks may corrode or shift over time, especially if the foundation has settled.
- Roller
- Small wheels (nylon or steel) that ride inside the tracks, supporting the door’s weight and reducing friction. Worn or cracked rollers make the door rattle or stick. If you hear grinding near the top of your garage door in Stratham’s humid summers, it’s often the rollers begging for replacement.
- Opener
- The electric motor that automates your garage door’s movement. Modern openers include safety features like photo-eye sensors and quiet belt drives. If your opener in Stratham struggles to lift a heavy wooden door, it may need a higher-horsepower model or a professional adjustment.
- Photo-eye sensor
- A pair of infrared beams mounted near the garage door’s floor that detect obstructions. If the beam is broken while closing, the door reverses automatically. These sensors are critical for safety in homes with kids or pets, and they’re required by code in Stratham.
- Limit switch
- A safety device inside the garage door opener that tells the motor when to stop opening or closing. If your door stops short or won’t fully close in Stratham’s windy weather, the limit switch may need recalibration or replacement.
- Weatherstripping
- The rubber or vinyl seal along the sides and bottom of the garage door that blocks drafts, moisture, and pests. In Stratham’s coastal climate, high-quality weatherstripping prevents salt air from corroding tracks and keeps your basement dry.
- R-value (insulation)
- A measure of how well garage door insulation resists heat flow. A higher R-value (like R-12 or R-16) keeps your Stratham home warmer in winter and cooler in summer, especially if your garage is attached. Insulated doors also reduce noise from wind or traffic.
- Cable drum
- A grooved wheel at the top of the garage door that winds and unwinds the lift cable as the door moves. If a cable drum is cracked or misaligned, the cable can fray or snap, leaving your door stuck. This is a common issue in older Stratham homes with original hardware.
- Bottom seal
- The thick rubber strip along the bottom edge of the garage door that seals the gap between the door and the driveway. A worn bottom seal lets water, snow, and pests enter your garage. In Stratham’s snowy winters, replacing this seal can prevent ice dams and flooding.
- Travel module
- The electronic brain of a garage door opener that controls speed, force, and safety features. If your opener in Stratham beeps erratically or reverses for no reason, the travel module may need reprogramming or replacement.
- Trolley
- The part of the garage door opener that connects the motor to the door, pulling it along the track. If your opener’s trolley is loose or skipping, the door may jerk or fail to open fully. This is a frequent culprit in older Stratham homes with sagging ceilings.
- Manual release
- A red handle or cord inside the garage that disconnects the door from the opener, allowing you to open or close it by hand in a power outage. Always test yours in Stratham’s storm-prone seasons—if it’s stuck, the door could be unsafe to operate manually.
Frequently Asked Questions
How much does it cost to replace a garage door spring in a Stratham home with original hardware?
In Stratham, replacing a torsion spring averages $220–$350, while an extension spring runs $150–$250. Older homes with rusted hardware or mismatched springs may cost more. Contact us for a free estimate that accounts for your door’s weight and local labor rates.
Can I upgrade my Stratham garage door’s insulation without replacing the whole door?
Yes—adding R-12 or R-16 insulation panels to your existing door costs $150–$300 in Stratham. This is a smart fix for drafty older homes, especially if your garage is attached to the house. We’ll match the insulation to your door’s style and local climate.
Why does my Stratham garage door make a grinding noise only in winter?
Cold temperatures shrink metal and stiffen rollers, causing grinding in older Stratham homes. Lubricating the tracks and replacing worn rollers usually fixes it. If the noise persists, the tracks may be misaligned—our Stratham Track & Roller Alignment guide walks you through the fixes.
Have a garage door repair question? Martin & Philip Garage Door's Repairs Inc is licensed, insured, and gives Stratham homeowners a free written estimate.